to control (something) using rules; to adjust (an apparatus, mechanism) in order to get the desired result
manage, organize
Cases of word usage
1) to change the ending or form of (a word) to show its relationship to other words in a sentence; to adapt, regulate (the voice); (of a line etc) to bend inwards; curve (inflect)
2) a weight hung so that it swings freely, especially to regulate the movement of a clock (pendulum)
